This study aimed to explore the influence of transformational leadership on the organizational citizenship behavior. Moreover, followers' self-efficacy was regarded as the subordinate contingency factor and the perception of organizational politics as organizational contingency factor in this study. The hypotheses of this study was based on the perspectives of path-goal theory, and the data collected from 229 employee-supervisor dyads were examined with hierarchical regression analysis. The results of this study indicated that self-efficacy had significantly and positive moderation effect on the relationship between transformational leadership and organizational citizenship behavior. In addition, the perception of organizational politics had significant but negative moderation effect on the relationship between transformational leadership and organizational citizenship behavior. Finally, this study provided discussion and suggestions for future studies.